31010242321 has 16 divisors (see below), whose sum is σ = 31501267200. Its totient is φ = 30522780288.

The previous prime is 31010242267. The next prime is 31010242331. The reversal of 31010242321 is 12324201013.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31010242321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31010242331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29845720 + ... + 29846758.

It is an arithmetic number, because the mean of its divisors is an integer number (1968829200).

Almost surely, 2^31010242321 is an apocalyptic number.

It is an amenable number.

31010242321 is a deficient number, since it is larger than the sum of its proper divisors (491024879).

31010242321 is a wasteful number, since it uses less digits than its factorization.

31010242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31010242321 its reverse (12324201013), we get a palindrome (43334443334).

The spelling of 31010242321 in words is "thirty-one billion, ten million, two hundred forty-two thousand, three hundred twenty-one".